Free Printable Traits and Reproduction 3

Free Printable Worksheets

Worksheets

Traits and Reproduction 3

Total questions: 20

Worksheet time: 10mins

Name

Class

Date

1.

True or false: The offsprings’ traits depend on which parent the offspring inherited more copies of genes from.

a)

True

b)

False

2.

True or False: The gender of an offspring is determined by the mother.

a)

True

b)

False

3.

Determine if the phrase applies to identical twins, fraternal twins, both or neither.

Formed from two separate egg cells and two separate sperm cells.

a)

identical

b)

fraternal

c)

both

d)

neither

4.

Determine if the phrase applies to identical twins, fraternal twins, both or neither.

Look exactly alike and have the same genetic makeup.

a)

identical

b)

fraternal

c)

both

d)

neither

5.

Determine if the phrase applies to identical twins, fraternal twins, both or neither.

May be different genders.

a)

identical

b)

fraternal

c)

both

d)

neither

6.

Determine if the phrase applies to identical twins, fraternal twins, both or neither.

Are no more alike than any other pair of siblings.

a)

identical

b)

fraternal

c)

both

d)

neither

7.

Determine if the phrase applies to identical twins, fraternal twins, both or neither.

Are carried by the mother at the same time.

a)

identical

b)

fraternal

c)

both

d)

neither

8.

Determine if the phrase applies to identical twins, fraternal twins, both or neither.

Occur when one fertilized egg splits into two different individuals.

a)

identical

b)

fraternal

c)

both

d)

neither

9.

Organisms have _______ copies of each gene in most of their cells.

a)

1

b)

2

c)

3

d)

4

10.

Humans have _______ different genes.

a)

205

b)

2,050

c)

20,500

d)

205,000

11.

Humans have _______ pairs of chromosomes.

a)

13

b)

23

c)

33

d)

43

12.

Egg and sperm cell have _____ copies of a gene.

a)

1

b)

2

c)

3

d)

4

13.

Genes give our bodies instructions to make ___________.

a)

glucose

b)

carbohydrates

c)

minerals

d)

proteins

14.

An individual who is _______ will have two of the same versions of a gene.

a)

homozygous

b)

heterozygous

c)

dominant

d)

recessive

15.

An individual who is __________will have two different versions of a gene.

a)

homozygous

b)

heterozygous

c)

dominant

d)

recessive

16.

A(n) is a version of a gene.

a)

trait

b)

feature

c)

allele

d)

protein

17.

______________________ is a result of sexual reproduction.

a)

mutation

b)

gene mapping

c)

implantation

d)

variation

18.

_________________________ occurs when an egg cell combines with a sperm cell to produce an offspring.

a)

fertilization

b)

combination

c)

mutation

d)

hybridization

19.

A person with two X chromosomes is __________.

a)

male

b)

female

c)

tall

d)

short

20.

____________ are changes in genetic make up.

a)

variations

b)

mutations

c)

traits

d)

abnormalities

100 %

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